An unusual generalized quadrangle of order sixteen

doi:10.1016/0097-3165(78)90044-4

Journal of Combinatorial Theory, Series A

Volume 24, Issue 1, January 1978, Pages 50-74

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Abstract

The generalized quadrangle $J$ associated by the method of Tits with the nonconical ovoid discovered by M. Hall, Jr., in PG(2, 16) is shown to contain no subquadrangle of order 4. The full collineation group of $J$ is determined.